Information Processing System and Apparatus Generating Image Pattern in Which Are Embedded Authenticated User Information and Application Information, Controlling Method Therefor and Medium Storing a Program Instructing a Computer to Execute the Method

1. An information processing system comprising: an image forming apparatus; and a mobile terminal, wherein the image forming apparatus includes: an authentication unit configured to authenticate a user; a first generating unit configured to generate a first image pattern in which user information authenticated by the authentication unit and application information relating to a predetermined application which is permitted to be used in the image forming apparatus by the authenticated user are embedded; a second generating unit configured to generate a second image pattern in which address information for communication with the image forming apparatus is embedded; and a display control unit configured to display, on a display of the image forming apparatus, the generated first and second image patterns, and wherein the mobile terminal includes: a read out unit configured to read out an image pattern displayed on the display of the image forming apparatus; a deriving unit configured to analyze the first image pattern read out by the read out unit, to derive the user information and the application information; and a control unit configured to display, on a display of the mobile terminal, an operation image for using the predetermined application to which the application information derived by the deriving unit relates during a period of reading out of the first image pattern by the read out unit, wherein the operation image is displayed on the display of the mobile terminal as a virtual operation screen usable by the authenticated user to operate the predetermined application which is provided in the image forming apparatus.

2. The information processing system according to claim 1 , wherein the authentication unit performs authentication processing based on authentication information transmitted from the mobile terminal using the address information embedded in the second image pattern, and the display control unit displays, on the display of the image forming apparatus, the first pattern generated by the first generating unit when the authentication process is successfully performed.

3. The information processing system according to claim 2 , wherein the mobile terminal further includes a first transmitting unit configured to transmit the authentication information to the image forming apparatus, using the address information derived by the deriving unit according to the reading out of the second image pattern by the read out unit.

4. The information processing system according to claim 2 , wherein the image forming apparatus further includes a third generating unit configured to generate a third image pattern in which list information representing a list of at least one application which is permitted to be used in the image forming apparatus by the authenticated user is embedded, when the authentication processing is successfully performed, the display control unit displays the third image pattern generated on the display of the image forming apparatus, the deriving unit analyzes the third image pattern read out by the read out unit, to derive the information of the list of the application information, and the control unit displays, on the display of the mobile terminal, the image frame of the list corresponding to the list information, during a period of reading out of the third image pattern.

5. The information processing system according to claim 4 , wherein the mobile terminal further includes: a selecting unit configured to select an application desired to be used in the mobile terminal from the list; and a second transmitting unit configured to transmit a result of the selecting by the selecting unit to the image forming apparatus.

6. The information processing system according to claim 5 , wherein the list includes the predetermined application, and when the result of the selecting by the selecting unit transmitted by the second transmitting unit from the mobile terminal to the image forming apparatus indicates that the predetermined application is selected, the first generating unit generates the first image pattern.

7. The information processing system according to claim 4 , wherein the list includes an application configured to perform secure printing.